package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import springfox.documentation.spring.web.json.JsonSerializer;

import java.util.List;

@Service
public class SetmealServiceImpl implements SetmealService {

    @Autowired
    private SetmealMapper setmealMapper;

    @Autowired
    private SetmealDishMapper setmealDishMapper;

    /**
     * 新增套餐 with dish
     * @param setmealDTO
     */
    @Override
    public void saveWithDish(SetmealDTO setmealDTO) {
        // save setmeal
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        setmealMapper.insert(setmeal);  // need generate id
        Long setmealId = setmeal.getId();
        // save setmeal_dish
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        setmealDishes.forEach(setmealDish -> {
            setmealDish.setSetmealId(setmealId);
        });
        setmealDishMapper.saveBatch(setmealDishes);
    }

    /**
     * 分页查询套餐
     * @param setmealPageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
        PageHelper.startPage(setmealPageQueryDTO.getPage(), setmealPageQueryDTO.getPageSize());
        Page<SetmealVO> page = setmealMapper.pageQuery(setmealPageQueryDTO);
        return new PageResult(page.getTotal(), page.getResult());
    }

    /**
     * 更新套餐 with dish
     * @param setmealDTO
     */
    @Override
    @Transactional
    public void updateWithDish(SetmealDTO setmealDTO) {
        // update setmeal
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        setmealMapper.update(setmeal);
        // update dishes
        setmealDishMapper.deleteBySetmealId(setmealDTO.getId());
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        if(setmealDishes != null && !setmealDishes.isEmpty()){
            setmealDishes.forEach(setmealDish -> {
                setmealDish.setSetmealId(setmealDTO.getId());
            });
            setmealDishMapper.insertBatch(setmealDishes);
        }
    }

    /**
     * 根据id查询套餐
     * @param id
     * @return
     */
    @Override
    public SetmealVO getById(Long id) {
        SetmealVO setmealVO = setmealMapper.getById(id);
        List<SetmealDish> setmealDishes = setmealDishMapper.getBySetmealId(id);
        setmealVO.setSetmealDishes(setmealDishes);
        return setmealVO;
    }

    /**
     * 起售或停售套餐
     * @param status
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        Setmeal setmeal = Setmeal.builder()
                .id(id)
                .status(status)
                .build();
        setmealMapper.update(setmeal);
    }

    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> list(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.list(setmeal);
        return list;
    }

    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }

    /**
     * 批量删除套餐
     * @param ids
     */
    @Override
    public void deleteBatch(Long[] ids) {
        setmealMapper.deleteBatch(ids);
    }
}
